Places, institutions or technological arrangements
where or by means of which goods or services are exchanged. Also, the set of all sale and purchase transactions that affect the price of some good or service.

Anything that is generally accepted as final payment for goods and services; serves as a medium of exchange, a store of value and a standard of value. Characteristics of money are portability, stability in value, uniformity, durability and acceptance.

A regular payment, often at monthly or biweekly intervals, made by an employer to an employee, especially in the case of professional or white-collar employees. Salaries are paid for services rendered and are not based on hours worked.